ASTROSAT CZTI

Data Quality Report

Orbit 45226

Creation date: 2024-06-27T23:10:52.593005
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_049T07_9000006056_45226cztM0_level2.fits modeM0/AS1A13_049T07_9000006056_45226cztM0_level2_quad_clean.evt
Size (bytes)472,446,720113,624,640
Size450.6 MB 108.4 MB
Events in quadrant A5,454,996752,090
Events in quadrant B3,455,137798,576
Events in quadrant C3,081,044767,340
Events in quadrant D4,986,403663,961

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213272
B0145792
C0136822
D0193222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65831642.491265%
B6583991.503874%
C6583330.501291%
D65834016.091448%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7753 6583 29 29 0.37% 0.44%
B 7753 6584 59 59 0.76% 0.90%
C 7753 6584 7 7 0.09% 0.11%
D 7753 6584 369 369 4.76% 5.60%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 2475995 15935.87 751 736 155.3
A 13 248 36668 231.33 751 736 155.3
A 2 79 35477 223.66 751 736 155.3
B 5 32 157280 1057.18 761 738 148.1
B 3 112 146869 986.87 761 738 148.1
B 5 172 51360 341.87 761 738 148.1
C 12 2 60421 334.5 760 766 178.3
C 2 14 25900 140.93 760 766 178.3
C 3 233 19175 103.22 760 766 178.3
D 13 249 915547 5056.47 727 708 180.9
D 5 235 358182 1975.82 727 708 180.9
D 2 249 236600 1303.81 727 708 180.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter